Green coffee side effects are generally minimal, and they are similar to those caused by other caffeinated beverages, including dizziness, rapid heart rate, blood glucose changes, and jitters. These are most common in those who have a sensitivity to caffeine or those who consume coffee in high doses. The long-term green coffee side effects for pregnant women or people with certain health conditions has not been firmly established.

The use of green coffee dates back thousands of years. It has been used to create beverages such as wine and traditional coffee, and it was once used as a source of food. Green coffee is the same type commonly consumed in coffee drinks, but the beans are not roasted. The extracts are commonly used to promote weight loss and for their high antioxidant content.

For most people, green coffee side effects are minimal or non-existent when taken in the appropriate doses. Those with a sensitivity to caffeine may become jittery or experience heart palpitations. These symptoms are generally short lived and resolve on their own. Those who are unsure of their caffeine tolerance level should begin by taking a very low dose of green coffee supplement and then slowly increasing their daily dose to the maximum recommended amount.